Separable fastener



June 25, 1935. A wy K|MBE| Re. 19,624

SEPARABLE FASTENER, FASTENER INSTALLATION AND METHOD OF ATTACHING THE SAME Original Filed Aug. 5, 193C 2 Sheets-Sheet l (fly/4 I aven/Zo Y.- Hwr? Wl 27623,

FASTENER INSTALLATION AND METHOD OF ATTACHING THE SAME A. W. KIMBELL June 25, 1935.

SEPARABLE FASTENEH,

Original Filed Aug. 5, 1930 2 Sheets-Sheet 2 mum?? Reissued June 25, 1935 PATENT OFFICE SEPARABLE FASTENER, FASTENER INSTAL- LATION AND METHOD OF ATTACHING THE SAME Arthur W. Ktmbell, Newton (leuter, Mass., as-

signor to United-Carr Fastener Corporation,

Cambridge, Mass.. a corporation chusetts Origmal No. 1,872,968,

Serial No. 473,138, August 5, 1930.

of Massadated August 23, 1932,

Application for reissue May 5, 1934, Serial No. '124,179

9 Claims.

My invention aims to provide improvements in separable fasteners, fastener installations and the method of attaching the same.

In the drawings winch illustrate preferred em- 5, bctliments of my invention:-

Figure 1 is a section through a snap fastener instdlation showing one form of my invention;

Y Fig. 2 is a section through the snap fastener stud attaching member shown in Figure l prior to attaching them tothe carrying medium;

Fig. 3 is a section through a stud installation showing a secon-d form of my invention;

Fig. 4 is a section through the stud and rivet slmwnin Fig. 3 prior to attaching them to a carmns medium;

Figs. 5 and 6 show a third form of my invention; and

Figs. 7 and 8 show another form of my invention similar to that shown in Figs. 5 and 6, but with a. closed emi eyelet.

My invention is particularly, though not exclusively, adapted: to snapfasteners and snap fastener histallations and I have illustrated in the drawings snap fastener stud members which incorporate preferred structures and preferred methods of attachment. Therefore, I shall prooecd to describe my invention with reference to the studs shown.

I-Ieretofore, there have been several methods of attaching stud members to cloth, leather and the like and as many different constructions and assemblies of parts. However, there. have been various dificul-ties encountered which made unsatisfactory installations. For instance, when a stud' is to be attached to aV piece of knitted material a much stronger installation can be obtained if the yarn is not cut by the shank of the attaching member. With any type of attaching means known to me it is practically impossible to secure, by metallic means, a stud, socket or button to knitted material without cutting the yarn and, while my invention overcomes this trouble, it is equally advantageous for use with other material due to the strength of the attachment.

The stud member shown in the drawings has a base i, a hollow boss pressed from the base to lzuovirle a head; 2` and a neck 3 for cooperation with a socket t, as shown in Fig. 1. The socket maybe of any suitable construction. I also use asa part o! the stud unit an eyelet havingV a base 6 secured to the base I of the stud and a tubular projection 6 extending into the hollow boss and toward the head 2, as best shown in Fig. 2. In order that the best results may be secured, I provide a depression in the stud head which forms an anvil 1 extending toward the tubular projection 6 but being spaced from the end thereof.

The attaching member which I have used in the installation shown in Figure l is in the nature ot a tack 8 having a hollow shank 9 provided with a tapered end preferably, though not necessarily, rounded at the pointed end, as best shown in Fig. 2.

My improved method of securing the stud to the carrying medium l0 is to place the stud and attaching member in a suitable mechanism between Which the carrying medium l0 may be held. As the mechanism is operated to move the parts toward each other, the shank of the tack forces its Way through the threads of the carrying medium without injury to the threads. Then the shank passes through the tubular projection 6 of the eyclet and is forced against the anvil 1. During the upsetting operation the closed end portion ll of the tack is collapsed and forced into the hollow shank and is separated from the shank portion 9 by a combination thinning .and tearing action taking place between the anvil 1 and the end of the tubular projection E during the attaching operation. The shank is then spread laterally outwardly by the anvil in the same manner as though the attaching element were a tubular rivet having an open end. The outwardly turned. portion l2 of the shank 9 0i the attaching member is turned over the end of the tubular projection 6 of the eyelet (Figure l), thereby providing means for holding the parts in xed assembled relation with the carrying medium I0 which is clamped tightly between the base of the eyelet and the base of the attaching member.

'I'he tapered end l I of the shank of the attaching element serves two important purposes. First. it will enter between the threads of a loosely woven material Without injury to the fabric and, second, (in its severed state as shown in Figure l, and indicated by the numeral Il) it acts as a wedge piece after it has been severed from the shank, as shown in Fig. I, to prevent the uncurling of the laterally expanded portion I2 when the parts are subjected to axial stresses.

If the stud is to be attached to a carrying medium which will not unravel or pull loose, then an attaching element I3 having a tubular rivet portion I4 may be used, as shown in Figs. 3 and 4.

The tubular rivet portion I4 passes through the material, through the eyelet and has its end upset outwardly over the end of the projection 6 of the eyelet, as shown in Figure 1. While no wedge piece is present it is a satisfactory attachment for certain installations and the same stud unit may be used with either'type of attaching element.

Referring now to the embodiments of my invention shown in Figs. 5 through 8, I have shown a fastener stud and installations along the lines of those described in connection with Figs. l to 4, except that the head of the stud is made without the depressed anvil portion. The inner surface presents a continuously curved surface I5 against which the end of a closed rivet or tack 8 is pressed to upset the end laterally over the end of the shank of the eyelet 6, as shown in Fig. 4.

Fig. 7 shows an installation which is the same as Fig. 5, except that the eyelet has a closed end I6 which may be pierced by the tapered end of the tack shank 8 and when the end of the shank is upset it is bent laterally outwardly with the pierced portion of the end I8, thereby to make a larger surface engagement between the eyelet and the shank 8 than is possible with an open ended eyelet such as shown in Fig. 5.

While I have illustrated and described particular embodiments of my invention I do not wish to be limited thereby, because the scope of my invention is best defined by the following claims.

What is claimed is l. A snap fastener installation comprising, in combination, a carrying medium, a separable fastener member located at one side of said carrying medium and having an anvil portion and an attaching element having a hollow shank provided with a closed end forced through the carrying medium and upset by said anvil portion, said anvil portion and said shank cooperating to remove the closed end of the shank and to upset the shank in the manner of an open end rivet.

2. A snap fastener installation comprising, in combination, a carrying medium. a separable fastener member located at one side of said carrying medium and having an anvil portion, an attaching element having a hollow shank provided with a closed end forced through the carrying medium and upset by said anvil portion, said anvil portion and said shank cooperating` to remove the closed end of the shank and to upset the shank in the manner of an open end rivet and an eyelet member secured to the base of the fastener member and having a tubular portion extending toward the anvil portion to provide means for cooperative engagement with the upset portion of the shank to secure the parts of the installation together.

3. A snap fastener installation comprising, in combination. a carrying medium, a separable fastener member located at one side of said carrying medium and having a head for engagement with a cooperating fastener element, an anvil portion pressed from said head, an attaching element having a hollow shank provided with a closed end forced through the carrying medium and upset by said anvil portion, said anvil portion and said shank cooperating to remove the closed end of the shank and to upset the shank in the manner of an open end rivet and an eyelet member secured to the base of the fastener member and having a tubular portion extending toward the anvil portion to provide means for cooperative engagement with the upset portion of the shank to secure the parts of the installation together.

4. The method of attaching a separable fastener member having an anvil portion to a carrying medium by means of a hollow shank attaching member having a tapered closed end which comprises forcing the hollow shank of the attaching member through the carrying medium and against the anvil portion provided by the fastener member to sever the closed end from the shank and then turn the tubular shank outwardly in the manner of upsetting a tubular open ended rivet.

5. The method of attaching a separable fastener member having an anvil portion and an eyelet to a carrying medium by means of a hollow shank attaching member having a tapered closed end which comprises forcing the hollow shank of the attaching member through the carrying medium and against the anvil portion provided by the fastener member to sever the closed end from the shank and then turn the tubular shank outwardly over the end of the eyelet in the manner of upsetting a tubular open ended rivet.

6. The method of attaching a separable fastener member having an anvil portion and an eyelet to a carrying medium by means of a hollow shank attaching member having a tapered closed end which comprises forcing the hollow shank of the attaching member through the carrying medium and against the anvil portion provided by the fastener member to sever the closed end from the shank, the said severed portion being wedged into the shank to reinforce the attachment.

'7. The method of attaching a snap fastener and like member to a carrying medium by means of a. hollow shank attaching member having a tapered closed end on the shank, which comprises forcing the tapered end of the shank through the carrying medium and through a portion of the member to be attached and then forcing the tapered end of the shank of the attaching member against a suitable anvil to force a portion of the closed end of the shank into the shank. turning a portion of the tubular shank outwardly in a manner of upsetting a tubular open ended rivet and during this operation separating the inwardly forced portion and lodging it within the shank adjacent to the outwardly turned portion.

8. A fastener installation comprising, in combination, a carrying medium, a snap fastener member located at one side of the carrying medium and having a hollow head, a tubular portion located within the hollow head and terminating in spaced relation to the inner surface of said head, anvil means provided by said head adjacent to the end of said tubular portion for upsetting the shank of an attaching member and an attaching member having a hollow shank passing through the said carrying medium and through the said tubular portion and having a portion thereof upset and expanded laterally over the end of the tubular portion and a sheet metal piece separate from. but formerly a part of said attaching member wedged into the hollow shank by the anvil means adjacent to the free end of the tubular portion to secure the fastener member in fixed relation to the said carrying medium, the wedged sheet metal piece acting as a stop to assist in preventing straightening of the laterally expanded portion of the attaching member.

9. The method of attaching a snap fastener and like member to a carrying medium by means of a hollow shank attaching member having a closed end on the shank which comprises forcing the closed end of the shank through the carrying medium and through a portion of the member to be attached and then forcing the closed end of the shank of the attaching member against a suitable anvil to separate a portion of the closed end of the shank from the rest of the shank and to upset another portion of the shank laterally thereby securing together the parts of the installation.

ARTHUR W. KIMBELL. 

